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Pulleys are used to step up the RPM's to 3-9000 rpm's. If you choose to use the original alternator pulley the
belt may have a tendancy to slip. The bigger the diameter of the pulley the more contact area the belt has to grip. A 6-8
inch engine pulley requires a 3-4 inch alternator pulley. Go as large as you can and keep this approximate ratio. Less
belt tension is required for larger pulleys so this equates into a longer life for the mechanical parts. New
pulleys can be found cheaply on Burdens Surplus or Surpluscenter.com. Expect to spend $15-$25.
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Brackets can be easily designed by using carboard and laying the holes out with a geometry compass to mesure
and mark distances between mounting holes. Test fit the cardboard then make it permanent.
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